Solar panel casing



FIG. 1 is a front-top perspective view of a solar panel casing showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a back view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a solar panel casing, as shown and described. 